NGC 7129 is a star-forming region that
contains many interesting features. Astronomers estimate that many of the bright
stars shown here are younger than 1 million years old! These "baby" stars are
very energetic and emit copious amounts of radiation that break apart (photo
dissociate) clouds of natal gas that surrounds them. One edge of this newly
formed cavity glows pink due to the excited hydrogen gas in the region. In
addition, a small number of very red structures indicate regions where new stars
are forming (but are not yet visible directly). (*)